Selaginella bisulcata Spring, 1850

Shalimov, Aleksandr Petrovich, Wu, Yu-Dong & Zhang, Xian-Chun, 2019, A taxonomic revision of the genus Selaginella (Selaginellaceae) from Nepal, PhytoKeys 133, pp. 1-76 : 1

Selaginella bisulcata Spring Figs 5 (1 A–C), 10B , 24

Selaginella bisulcata Spring, Mém. Acad. Roy. Sci. Belgique 24: 259. 1850; Iwatsuki 1975; Iwatsuki 1988; Dixit 1992; Thapa 2002; Zhang 2004; Zhang et al. 2013; Fraser-Jenkins et al. 2015; Fraser-Jenkins et al. 2017.

≡ Lycopodioides bisulcata (Spring) Kuntze, Revis. Gen. Pl. 2: 826. 1891, as " bisulcatum ". Type. INDIA. N.E. India, Meghalaya, Khasia, W. Griffith (mislabelled as “Gorval”, i.e. Garhwal, Uttarakhand) (holotype: K).

= Selaginella bisulcata var. spinulosa Spring, Mém. Acad. Roy. Sci. Belgique 24(2): 260. 1850. Type. INDIA. Assam, Griffith s.n. (holotype: K).

Description.

Stems 20-45 cm, creeping. Rhizophores at intervals throughout stems, located on ventral side in axis branches. Main stems branched from near base upwards, in basal part main stem 1.2-1.8 mm in diam. Main stems subquadrangular, sulcate, branched throughout their length, primary leaves branches arranged 5-8 pairs. Axillary leaves elliptic, 3-4.6 × 1.1-1.6 mm, base exauriculate, margin denticulate or sparsely ciliolate. Ventral leaves asymmetrical, slightly ascending or spreading or deflexed, oblong, 3.2-5 × 1.2-2 mm, apex apiculate, in base margin entire or subentire, denticulate at apex, leaves not overlapping stem and branches, margin ciliolate or denticulate in basal and apical portions, entire in middle. Dorsal leaves asymmetrical, 1-2.4 × 0.6-1.5 mm, base obliquely cuneate, margin sparsely ciliolate, apex mucronate or aristate with arista curved, up to 1/2-4/5 as long as leaf, 0.4-0.8 mm. Strobili solitary, terminal, compact, 6-10 × 3.5-5.5 mm. Sporophylls dimorphic, ventral sporophylls ovate-lanceolate or oblong-ovate, in base dilated, margin ciliolate or lacerate-ciliolate; dorsal sporophylls oblong-lanceolate, carinate, margin ciliolate, apex acuminate or aristate, with sporophyll-pteryx incomplete and ciliolate. Megaspores white-brown, surface smooth; microspores orange, surface verrucate.

Ecology.

Evergreen, often in open dry slope areas, or in a little shade in light forest. Alt. 1500-2700 m.

Distribution in Nepal.

W, C, E.

Nepalese threatened status: not available data.

General distribution.

BHUTAN, CHINA (Sichuan, Yunnan), INDIA (Assam State, Sikkim, Manipur, Meghalaya, Nagaland, West Bengal), INDONESIA, MYANMAR, THAILAND, VIETNAM.

Chromosome number.

not available data.

Selected specimens examined:

C Nepal: NUWAKOT: "Chandragiri, near Thankot, Kathmandu, Nuwakot, c. 2000 m, 19 Nov 1986, T. Nakaike 3855 " (PE 01622152).

KATHMANDU: "Bagmati Zone, Kathmandu Distr., Second khola from the W. side of valley, at edge of low forest, c. 150 m. above and ¼ km SE of Bhangeri, above Gagal Phedim, N.W. of Sankhu, N. E. Kathmandu, 2 Oct 2001, C.R. Fraser-Jenkins, G.B. Tamang 29346 (FN 5321)" (US, photo); "Bhangeri, c. 1800-2100 m, 2 Oct 1986, T. Nakaike 2267 " (PE 01622219); "Bhangeri, c. 1800-2100 m, 2 Oct 1986, T. Nakaike 2306 " (PE 01622220).

KASKI: "Dhampus, Pokhara, 1000-1500 m. 10 Nov 1988, T. Nakaike 3786 " (PE 01622148); "Panchase Lekh (Kaski Distr.), n. 834282, alt. 2350 m, 12 Dec 1973, D.P. Joshi, M.M. Amatya 73/1170 " (KATH); "Pathana (Dhampus)-Tolka, alt. 1850-2050 m, 8 Jul 1983. H. Ohba et al. 8330208 " (TI, photo); "Banjan (2035m)-Mt. Panchase (2500m), alt. 2120 m, 28°13'03"-15°12'N, 83°49'56"-47°54'E. 10 Sept 1999, M. Mikage et al. 9965087 " (TI, photo).

DOLAKHA: "Tandi, alt. 1500 m. 9 Sep 1954, A. Zimmermann 1132 " (KYO, photo).

E Nepal: ILAM: "near Ilam, Ilam, c. 1500-2000 m, 5 Nov 1986, T. Nakaike 3646 " (PE 01622149); "Ilam District, wooded slopes with Cryptomeria trees, c. ½ km W of Pashupatinagar, above main road to Ilam, ENE of Ilam, 8 Sep 2001, C.R. Fraser-Jenkins, G.B. Tamang 5405 " (US, photo); "Ilam Distr.: In Oak-forest on slopes above streams, between Chitregaon and Manebhanjyang, c. 4-5 km NE of Pashupatinagar, on footpath to Manebhanjyang, near Indian border, NE of Ilam, 23 Oct 2001, C.R. Fraser-Jenkins 29608 (FN 5583)" (US, photo); "Mai Pokhari, 27°00'N, 87°57'E, alt. 2000 m, 28 Sep 1971, J.F. Dobremez DBR NEP 1233 " (E00670678); "Mai Majuwa-Mai Pokhari-Dhara Pani, 4 Dec 1963, H. Hara et al." (TI, photo; KYO, photo); "Ilam, 26°57'N, 87°57'E, alt. 1450 m, 28 Sep 1971, J.F. Dobremez DBR NEP 1202 " (E00670573); "Ilam District, Pashupatrinagar, alt. 2300 m, 8 Oct 2001. C.R. Fraser-Jenkins & G.B. Tamang 29430 (FN 5405)" (KATH).

TAPLEJUNG: "Dumhan, by the Tamur River, alt. 700 m, 31 Sep 1963, G. Murata, M. Togashi, T. Tuya " (TI, photo).

SOLUKHUMBU: "(Solukhumbu Distr.)-Janakpur Zone (Ramechhap Distr.), Namikhil (2300 m)-Chamare (1900 m)-Likhu (a bridge) (1550 m)-Bhandar (2300 m), alt. 1550-2300 m, 27°33'N, 86°23'E - 27°34'N, 86°20'E, 10 Sep 1985, H. Ohba et al. 8581505 " (TI, photo).

Figures

Figure 5. Morphological diversity of the leaves of Nepalese Sealginella species 1 A-C S. bisulcata (Nakaike 3786, PE) 2 A-C S. pennata (Nakaike 3507, PE) 3 A-C S. chrysocaulos (Nakaike 1058, PE). A - Axillary leaves, B - Dorsal leaves, C - Ventral leaves. Scale bars: 0.2 mm.

Figure 10. Diversity strobili of Nepalese Selaginella species A S. laxistrobila (Nakaike 1319, PE) B S. bisulcata (Nakaike 3786, PE) C S. pennata (Nakaike 3507, PE) D S. chrysocaulos (Nakaike 1058, PE) E S. ciliaris (s. n. 1225, PE) F S. monospora (Tabata et al. 11051, PE) G S. trichophylla (Lu & Zhang 27625 - B, PE) H S. repanda (Nakaike 3708, PE) I S. vaginata (Nakaike 1102, PE). Scale bars: 2 mm (A, B), 2 mm (C, D, G, H), 1 mm (E, F, I).

Figure 24. Selaginella bisulcata Spring. A Habit, lower surface B habit, upper surface C strobilus, lower surface D fragment of the upper surface of the lateral branches E fragment of the lower surface of the lateral branches (J. F. Dobremez DBR NEP 1233, E). Link: (http: // data. rbge. org. uk / herb / E 00670678).